Am Montag 26 Mai 2008 19:28:23 schrieb Bart Van Assche:
quoted text
> > Even if we could tell whether the device has remained the same, how
> > would we know the medium wasn't exchanged?
> 
> Looking at the filesystem UUID could help -- this is an ID that is
> present as data on the disk, and that is even independent of the bus
> type. See also /dev/disk/by-uuid.

The medium may or may not hold a filesystem that has a UUID.
In addition you can clone filesystems with dd but reuse them as
independent filesystems.

Yes, you could checksum parts of the filesystem and say that at some
point the user should suffer the consequences of his stupidity, but
such things don't belong into the kernel and neither are they specific
to USB.

	Regards
		Oliver

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